CVE-2024-23324

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    CVE-2024-23324

    Published: 9 Feb 2024Last Modified: 28 Oct 2026

    Summary: Envoy ext auth can be bypassed when Proxy protocol filter sets invalid UTF-8 metadata

    Details: Envoy is a high-performance edge/middle/service proxy. External authentication can be bypassed by downstream connections. Downstream clients can force invalid gRPC requests to be sent to ext_authz, circumventing ext_authz checks when failure_mode_allow is set to true. This issue has been addressed in released 1.29.1, 1.28.1, 1.27.3, and 1.26.7. Users are advised to upgrade. There are no known workarounds for this vulnerability.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/23xxx/CVE-2024-23324.json, https://github.com/envoyproxy/envoy/security/advisories/GHSA-gq3v-vvhj-96j6, https://nvd.nist.gov/vuln/detail/CVE-2024-23324, https://github.com/envoyproxy/envoy/commit/29989f6cc8bfd8cd2ffcb7c42711eb02c7a5168a

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 51964702956d64adcd1df6b8ea132e863fe78e74
    Fixed -a0e580408ef4568b0a16c6663b6d8ae0c46aba6a

    Affected versions

    v1.29.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2024-23324 | CVE-DB